The Wolfson Audio Card could help with a variety of Pi-powered projects such as building a VoIP conference phone, adding voice activation to a system, or building a wireless music player.

The card features includes line-in, line-out headphone and headset support, onboard stereo microphones, and adds digital audio S/PDIF functionality to the Raspberry Pi.

The card costs £24 (the Pi itself sells for £25) and is available to buy from Farnell element14 in Europe, CPC in the UK and Ireland, Newark element14 and MCM in North America, and element14 in Asia Pacific.

However, it's worth noting the card is only compatible with Raspberry Pis that feature the P5 pads, which can be found on Revision 2 Raspberry Pis onwards. You can find out more about the card in the video here.

The Raspberry Pi was originally designed as a tool to encourage kids to take an interesting in computing and coding projects, but has found huge success beyond that — for example, some even recommend it as small server for personal or business use.